We are taking a family vacation to the St Ann and St Mary's area in a villa where we can prepare our own meals. My children can be picky eaters and I also have 2 teenagers that snack all the time. Can I pick up things like peanut butter, chips and cookies that they are use to eating at a supermarket there? How much more expensive are those types of items? I plan on us eating the local goodies too but I know how kids can turn their noses up at some things.